What is the clinical evidence from this study?

Study design: Review. Population: Andersen-Tawil syndrome.

What question did this study set out to answer?

To review the clinical characteristics, genetic etiology, and hurdles in diagnosing and managing Andersen-Tawil syndrome.

September 19, 2026Heart Rhythm

Diagnostic and therapeutic challenges in Andersen-Tawil syndrome

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Key result

Andersen-Tawil syndrome features marked phenotypic heterogeneity and diagnostic delays commonly driven by KCNJ2 variants.

Population

Patients with Andersen-Tawil syndrome (ATS)

Design

Review

Authors

SJStine Bøttcher JacobsenUniversity of Copenhagen CWChristian van der WerfElectrophysiology AKAnneke J. van der KooiAmsterdam Neuroscience

Discussion

Member takes

Implication

Andersen-Tawil syndrome is a rare multisystem disorder characterized by ventricular arrhythmias and caused by KCNJ2 variants, presenting diagnostic and therapeutic challenges.

Key Points

To review the clinical characteristics, genetic etiology, and hurdles in diagnosing and managing Andersen-Tawil syndrome.
Evaluated the clinical triad of ventricular arrhythmias, periodic paralysis, and dysmorphic features defining Andersen-Tawil syndrome.
Assessed the role of genetic variations, particularly loss-of-function variants in the KCNJ2 gene affecting potassium channel Kir2.1.
Marked phenotypic variability frequently leads to prolonged diagnostic delays across affected individuals.
Pathogenic variants in KCNJ2 disrupt the inward rectifier potassium current (IK1), driving cardiac and muscular electrical dysfunction.

Structured PICO

Population

Patients with Andersen-Tawil syndrome (ATS)

Andersen-Tawil syndrome is a rare multisystem disorder characterized by ventricular arrhythmias and caused by KCNJ2 variants, presenting diagnostic and therapeutic challenges.

Cite This Study

Jacobsen et al. (2026) conducted a review in Andersen-Tawil syndrome. Andersen-Tawil syndrome is a rare multisystem disorder characterized by marked phenotypic heterogeneity and diagnostic delays, commonly caused by KCNJ2 loss-of-function variants.

synapsesocial.com/papers/6aae47b30c69660b71ecc6e9 https://doi.org/10.1016/j.hrthm.2026.09.020

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Implication

Andersen-Tawil syndrome is a rare multisystem disorder characterized by ventricular arrhythmias and caused by KCNJ2 variants, presenting diagnostic and therapeutic challenges.

Diagnostic and therapeutic challenges in Andersen-Tawil syndrome

Discussion

Member takes

Implication

Key Points

Structured PICO

Cite This Study

Diagnostic and therapeutic challenges in Andersen-Tawil syndrome

Discussion

Member takes

Implication

Key Points

Structured PICO

Cite This Study

Also Consider

Also Consider